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Prius 3 2014 204K miles

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by suntosh, Nov 21, 2024 at 10:26 PM.

  1. suntosh

    suntosh Junior Member

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    III
    I blew my head gasket at 186K. I did some bad things such as using sealant so that sealed a lot of things.

    Fast forward, I replaced with Jap Engine and have about 204K now . Once I went long distance for 100 miles and at about 100 mph, seems the car could go faster. For few months since if I push the gas hard for long, I'd get the engine heating icon on the dashboard. It would disappear intermittently.

    Its been a good year , since I have been using the car and the engine heating icon never appears , I make sure I dont push it too hard for way to long like 80 mph for 50 miles straight and its been running great. Should I stil get the EGR valves cleaned or should I worry about it coming back.
     
    #1 suntosh, Nov 21, 2024 at 10:26 PM
  2. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Were the intake manifold (has EGR passages) and EGR components cleaned in the course of the engine replacement? If not, they’ll be more-or-less completely carbon-blocked by now, should definitely be cleaned, and recleaned at least every 50k miles.

    My 2 cents: neglected EGR cleaning is why you’re on a second engine.

    see top two links in my signature; on a phone turn it landscape to see signatures.
     
    #2 Mendel Leisk, Nov 22, 2024 at 9:37 AM
  3. suntosh

    suntosh Junior Member

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    I am in DFW and its hard to find someome do this dirty work. I am not hands on. Why not just change the EGR valve that should get you a 100k more easy minimum ?
     
    #3 suntosh, Nov 22, 2024 at 7:18 PM
  4. Eddie25

    Eddie25 Active Member

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    It's not just the EGR valve that needs to be cleaned it's the whole system, but to me it seems more likely to be related to using head gasket sealer than a clogged EGR system. The radiator or the water pump could be gunked up.
     
    #4 Eddie25, Nov 22, 2024 at 8:20 PM
  5. bisco

    bisco cookie crumbler

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    nothing wrong with that, that's what a dealer would do
     
    #5 bisco, Nov 22, 2024 at 8:20 PM
  6. rjparker

    rjparker Tu Humilde Sirviente

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    The egr could be completely blocked and the engine coolant temperature won’t change. Odds are good you have reduced radiator capacity after using the sealant.
     
    #6 rjparker, Nov 22, 2024 at 8:34 PM
    Brian1954 likes this.
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